木霉菌LTR-2可湿性粉剂对6种蔬菜灰霉病的田间防治效果

Field efficacy of Trichoderma LTR-2 wettable powder against six kinds of vegetable gray mold diseases

在田间用木霉菌LTR-2可湿性粉剂1 500 g/hm2喷雾,防治番茄、茄子、五彩椒、辣椒、扁豆和黄瓜6种蔬菜叶部灰霉病的效果分别为77.96％、64.45％、71.43％、70.24％、72.71％、75.41％,对照药剂40％嘧霉胺悬浮剂480g/hm2的防治效果为71％ ～81％.木霉菌可湿性粉剂的施药时期应掌握在发病初期,以后每隔7d用1次药,连续用药2～3次.使用剂量1 500 g/hm2,可有效地防治蔬菜灰霉病的发生.

We prevented vegetable gray mold diseases for tomato, eggplant, color pepper, chili, lentil, and cucumber with Trichoderma LTR-2 wettable powder （ 1500 g/hm2） as spray. This provided ？？. 96%, 64.45%, 71.43%, 70.24%, 72.71%, and 75.41 % protection and control effect. Pyrimethamil 40% SC of 480 g/hm2 dilution could give control effect of 71% -81%. Spray time of Trichoderma LTR-2 wettable powder should be in the early period of the disease. The wettable powder can effectively prevent vegetable gray mold disease with spray frequency of 7 days, continuous employment of 2 3 times, and the dosage of 1500 g/hm^2.